Wire mesh roofing



Feb. 9, 1932. H|KA$A 1,844,655

mm uasn aodrmo Filed Kay 7, 1929 Patented Feb. 9, 1932 UNITED STATES Y'UICHI OI AKASAKA-KU, TOKYO, JAPAN mu aoorme Application filed Kay 1, 1929, Serial No. 361,167, and in Japan ma 19, 1928.

The present inventionrelates to the construction of a wire mesh roofing, and has for.

The asphalt-made materials hereto known as water proofing materials are poor in tensile stress, and often results in damaging the water proofing layer because they are cracked owing to being poor in tensile stress if the ground or support concrete .or the ground plate is submitted to expansion and contraction. In order to eliminate this defect one has used such auxiliary materials as hessian cloth or fabric cotton for compensating for the tensile stress of asphalt, but in practice such means is in vain to attain the purpose aimed at on account of the auxiliary materials losing their characteristic property owing to the heating treatment to which the asphalt is subjected before it is used.

The roofing constructed according to the present invention easily eliminates this defeet by means of its characteristic constructional form. According to the invention the roofing consists of alternate layers of soft metallic wire mesh and of asphalt-made roof- 1 liquid, and the joining sides of the r00 superimposed and.

ing material glued together with as haltic are in stepped form,- the step consisting of each alternate layer.. As asphalt-made roofing materials are used roofing, felt or canvas. As the roofing qf the invention is in such constructional form the 'oining' of the joining sides of the roofing is one in such an especial mannerthat one wire mesh and otherwire mesh, and one asphalt-made roofing material and otherasphalt-made roofing material are glued, respectively, with asphaltic liquid. g

In the accompanying drawings illustrating embodiments of the presentinvention Fig. 1 is a eneral view of the roofingof the invention; ig. 2 a transverse section of ado'uble type roofing, Fig. 3 the same view when two'of the same roofing have been jointed, and Figs. 4 and 5 sections of a single type roofing, corresponding to Figs. 2-and 3.

In the drawings, Figs. 2 and 3, the. double type roofing consists of a soft metallic wire mesh 1 and of asphalt-made roofing material such as roofing, felt or canvas 2 glued to both surfaces of the wire mesh with asphaltic liquid 3, and the joining sides of the roofing are in stepped form, the upper step consisting no of roofing, felt or canvas 2, the middle one of wire mesh 1 and the lower one again of roofing, felt or canvas2. The manner in which two of this roofing have been jointed at the joining sides is illustrated in Fig. 3.

As seen fronrthis figure, at the middle part of the jointed portion the wire mesh 1 and 1, and at the upper and lower parts the roofings, felts or canvases 2 and 2 are superimposed and glued, respectively, with asphaltic to liquid 3. This joining thus offers an improved water proofing layer which especially stands a great tensile stress caused due to the expansion and contraction of the ground plate or due tothe cracking of the ground or support concrete. The roofing body thus constructed is also abundant in tensile stress and therefore free from cracking, and the water proofing property of it is also assured absolutely.

The single type roofing shown in Figs. 4 and 5 is the same as that in Figs. 2 and 3 except that an asphalt-made roofing'material 2 such as roofing, felt or canvas is glued to only one surface of the wire mesh 1.

In this case the joiningjsides of the roofing are in stepped form also, the steps being two in number, as seen in drawings. The manner in which two of this single type roofing have been jointed at the joining sides are seen in Fig. 5, and in this case the wire meshes only are superimposed and glued, but the same advantages as the double roofing are also attained.

What I claimis:

1. A roofing sheet comprising a fibrous layer, a layer of asphalt adhering to and completely covering the fibrous layer and a reinforcing fabric of wire mesh of substantiallythe same width as the fibrous layer and offset therefrom a substantial distance, the said wire mesh layer being embedded in the asphalt layer and thereby terminating short of one edge of the fibrous and asphalt layers and extending beyond the other edge so that when said sheet is joined to another like sheet in partial overlapping relation, the asphalt layer is continuous throughout said sheets and across the joint between them.

2. A roofing sheet as claimed in claim 1 in cluding also a fibrous covering layer arranged on and united to the asphalt layer and termingting short of the edge of the reinforcing mes In testimony whereof I afiix my signature.

' YUICHI HIKASA. 

